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The Single UNIX &reg; Specification, Version 2<br>
Copyright &copy; 1997 The Open Group

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<h4><a name = "tag_000_009_144">&nbsp;</a>NAME</h4><blockquote>
strncmp - compare part of two strings
</blockquote><h4><a name = "tag_000_009_145">&nbsp;</a>SYNOPSIS</h4><blockquote>
<pre><code>

#include &lt;<a href="string.h.html">string.h</a>&gt;

int strncmp(const char *<i>s1</i>, const char *<i>s2</i>, size_t <i>n</i>);
</code>
</pre>
</blockquote><h4><a name = "tag_000_009_146">&nbsp;</a>DESCRIPTION</h4><blockquote>
The
<i>strncmp()</i>
function compares not more than
<i>n</i>
bytes (bytes that follow a null byte are not
compared) from the array pointed to by
<i>s1</i>
to the array pointed to by
<i>s2</i>.
<p>
The sign of a non-zero return value
is determined by the sign of the difference between the values of the
first pair of bytes (both interpreted as type
<b>unsigned char</b>)
that differ in the strings being compared.
</blockquote><h4><a name = "tag_000_009_147">&nbsp;</a>RETURN VALUE</h4><blockquote>
Upon successful completion,
<i>strncmp()</i>
returns an integer greater than, equal to or less than
0, if the possibly null-terminated array pointed to by
<i>s1</i>
is greater than, equal to or less than the possibly
null-terminated array pointed to by
<i>s2</i>
respectively.
</blockquote><h4><a name = "tag_000_009_148">&nbsp;</a>ERRORS</h4><blockquote>
No errors are defined.
</blockquote><h4><a name = "tag_000_009_149">&nbsp;</a>EXAMPLES</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_009_150">&nbsp;</a>APPLICATION USAGE</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_009_151">&nbsp;</a>FUTURE DIRECTIONS</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_009_152">&nbsp;</a>SEE ALSO</h4><blockquote>
<i><a href="strcmp.html">strcmp()</a></i>,
<i><a href="string.h.html">&lt;string.h&gt;</a></i>.
</blockquote><h4>DERIVATION</h4><blockquote>
Derived from Issue 1 of the SVID.
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UNIX &reg; is a registered Trademark of The Open Group.<br>
Copyright &copy; 1997 The Open Group
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